javax.naming.Communication Exception occure

hi i am lirin here i am doing connection between my client to remotej2ee server which i was download from sun's web site. when i connect than after a long time i get error like "javax.naming.CommunicationException:Can not connect to ORB[Root exception is org.omg.Corba.COMM_FAILURE: vmcid:sun minor code:208 completed=MayBe]" i am writing simple program like simple environment set from client side like wise, Properties env = new Properties(); env.puts(Context.INITIAL_CONTEXT_FACTORY,"com.sun.jndi.cosnaming.CNCtxFactory"); env.puts(Context.PROVIDER_URL,"iiop://www.vadodaramail.net:8000"); i am doing any kind of programming at server side but my j2ee server is running anyone can help me pls urgently buy